Show Posts
Pages: [1] 2
1  Using Arduino / Project Guidance / Re: Arduino wifi shield on: September 22, 2014, 07:41:27 pm
Thanks for the clarification.
2  Using Arduino / Project Guidance / Re: Arduino wifi shield on: September 22, 2014, 03:15:29 pm
I am really confused??  Isn't this an Arduino WiFi shield?  http://www.amazon.com/Arduino-WiFi-Shield/dp/B009M8BU50/ref=sr_1_1?ie=UTF8&qid=1411416635&sr=8-1&keywords=arduino+wifi+shield
It's $79.95 on Amazon.  Maybe I am missing something...
3  Using Arduino / Project Guidance / Re: Arduino wifi shield on: September 22, 2014, 01:57:24 pm
Wow.  One is $50 more??
4  Using Arduino / Project Guidance / Arduino wifi shield on: September 22, 2014, 01:02:18 pm
Can someone please give me advise on where I could find the best price on an Arduino Wifi shield that is also reliable?  Also what is the difference between this shield http://www.mouser.com/ProductDetail/Arduino/A000065/?qs=Cvel0QnFNSJ1Fl%2Fc0qmq5A%3D%3D&gclid=CJWXt_2w9cACFa_m7AodyX4Acg and this shield http://www.amazon.com/CarNetix-Arduino-Wireless-SD-Shield/dp/B006RATC2E

Thanks for your time.
5  Using Arduino / Sensors / Re: Temperature sensor on: September 17, 2014, 01:46:39 pm
Ok I will.
6  Using Arduino / Sensors / Re: Temperature sensor on: September 17, 2014, 01:39:42 pm
So the fan and other components that draw more than 40mA could damage the Arduino because they are trying to draw more power than the Arduino can supply?  I just assumed that the Arduino would only put out as much power as it could and nothing more.  I guess I understand that the transistor is sort of similar to a relay in that it is a buffer from a low power circuit to a higher power circuit.  At one point he connected the fan direct to a 9 volt battery but still went through the transistor.
7  Using Arduino / Sensors / Temperature sensor on: September 17, 2014, 12:39:22 pm
Hi all.  I was watching a video https://www.youtube.com/watch?v=_fNto4JOu4E on Youtube.  Basically the guy connects a temperature sensor to an Arduino and then connects an led, fan, and servo to a breadboard that will all react when the temperature gets above a certain point.  He designed this to cool down his entertainment center when it got too hot.  I'm not sure if he doesn't read posts or not but I have not heard back from him on a couple of questions I had concerning the video.  Could someone please take a minute to watch the video and answer my questions.  I would appreciate it very much.  Here is my post:

 
Hello.  Great video!!  I learned a lot from this video.  Sorry for a rather lengthy post... Just a couple of stupid questions (newbie here smiley-wink.  What would happen if I didn't use the transistor for the fan?  Would it cause a component to overheat and burn up or would the fan not work or would it just run slowly?  What if you hooked up the led, fan, and servo just using the arduino 5v power?  Would it burn up the board?  I'm still trying to understand transistors and why they are used.  Why do you hook up the 3.3v power if you're just using the 5v?  Why did you plug the positive terminal of the fan to the digital pin?  Was it just to show that the digital and analog pins can be used to supply 5v power?  Could you have just connected the positive lead to the power rail of the breadboard?  What would have been the difference?  Thanks for taking the time to explain this to me.  Have a great day!
8  Using Arduino / Microcontrollers / Arduino controlling a relay. on: June 09, 2014, 02:54:40 pm
How can I apply 5vdc through the Arduino using the serial monitor to control a 6vdc relay?  Also is that ok to use 5vdc to run the 6vdc relay?  I am just looking to make the 5vdc pin hot so that I can control it remotely while remote controlling my home pc from work.
Thanks for your help!
Shawn.
9  Using Arduino / Microcontrollers / Re: Using a standalone relay with an arduino. on: June 06, 2014, 11:11:56 am
Thanks for the tip groundfungus.  JimboZA I have a seperate relay that I'm trying to connect to my arduino.  I want to control the coil using the serial monitor.  Can that be done? 
10  Using Arduino / Microcontrollers / Using a standalone relay with an arduino. on: June 06, 2014, 10:20:59 am
I am trying to figure out how to control a stand alone mechanical relay with an arduino to turn on and off a lamp using the serial monitor in IDE.  The relay is 6vDC.  I have a 6vDC battery.  I was going to plug an extension cord into an outlet and splice one of the wires.  I would then wire one wire to the common terminal on the relay and the other to the normally open terminal.  I would then connect the relay to the 6vDC battery positive and negative leads.  I don't know how I would connect the arduino to the circuit so that I could control it through serial monitor.  Any help would be greatly appreciated. 
Thanks! 
Shawn.
11  Using Arduino / General Electronics / Re: Arduino & Solenoid from 12V battery. on: June 06, 2014, 10:09:15 am
I apologize for not posting correctly.  I am trying to figure out how to control a stand alone mechanical relay with an arduino to turn on and off a lamp using the serial monitor in IDE.  The relay is 6vDC.  I have a 6vDC battery.  I was going to plug an extension cord into an outlet and splice one of the wires.  I would then wire one wire to the common terminal on the relay and the other to the normally open terminal.  I would then connect the relay to the 6vDC battery positive and negative leads.  I don't know how I would connect the arduino to the circuit so that I could control it through serial monitor.  Any help would be greatly appreciated.  Please also let me know how to post this correctly in the correct forum.
Thanks! 
Shawn.
12  Topics / Robotics / Re: Pan/Tilt Camera on: December 15, 2012, 04:36:36 pm
Thank you very much.  I have seen the new topic button before it's just hard to find smiley  Do you have any documentation on the other information in my post?
13  Topics / Robotics / Re: Pan/Tilt Camera on: December 15, 2012, 12:40:40 pm
I am sorry if this is the wrong forum for this question.  I am a newbie.  I have 2 servos and want to control them ultimately through a web interface to pan tilt a web camera.  I am trying to follow the instruction of this website http://blog.aus10.org/?p=102 but to no avail.  She talks about uploading code and then being able to control the servos via the serial monitor.  I don't know what commands to use.  Could you please at least point me in the right direction.  I am very confused.  I tried contacting the author of the webpage but she won't get back to me.  Also how do you create a new post.  I was told there is a "new topic" button but I'm unable to find it.
Thanks so much for any help you can provide me!!

Shawn.
14  Using Arduino / Programming Questions / Re: Trying out sketch for forward acceleration on robot. on: December 15, 2012, 12:37:23 pm
I am sorry if this is the wrong forum for this question.  I am a newbie.  I have 2 servos and want to control them ultimately through a web interface to pan tilt a web camera.  I am trying to follow the instruction of this website http://blog.aus10.org/?p=102 but to no avail.  She talks about uploading code and then being able to control the servos via the serial monitor.  I don't know what commands to use.  Could you please at least point me in the right direction.  I am very confused.  I tried contacting the author of the webpage but she won't get back to me.  Also how do you create a new post.  I was told there is a "new topic" button but I'm unable to find it.
Thanks so much for any help you can provide me!!

Shawn.
15  Using Arduino / Networking, Protocols, and Devices / Re: WiFly on: December 03, 2012, 09:42:15 am
I haven't used anything as of yet.  I'm a newbie just trying to get started in this world.  Any direction you can point me in to set up these wireless modules would be very much appreciated!!
Pages: [1] 2